Lei Yan , Wenting Ouyang , Bowen Gong , Liwei Zhang , Baofa Cheng , Huan Wang , Hua-Xin Peng
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引用次数: 0
Abstract
The compaction deformation of uncured thermoset prepregs plays a pivotal role in determining the dimensional accuracy of the final composite parts in the hot press-forming process. This work delves into the investigation of in-plane rotation deformation occurred in multiaxial prepreg laminates during compaction. The influencing factors and deformation mechanism of this in-plane rotation phenomenon were elucidated through experiments and the finite element method. Experimental results show that in-plane rotation occurred in multiaxial laminates, with an average in-plane rotation angle exceeding 6.0° in laminates with continuous stacking pitch angles. The rotation angle increased when the mono-layer thickness was doubled. Finite element analysis reveals that the in-plane rotation was dominated by the interply shear stress between prepreg layers, which is induced by the difference in adjacent layer expansion direction. These findings offer useful insights into the lay-up design and deformation control in the hot press-forming process.
期刊介绍:
Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.